ACUS11 KWNS 180409
SWOMCD
SPC MCD 180409=20
MOZ000-ARZ000-OKZ000-KSZ000-TXZ000-180615-

Mesoscale Discussion 0489
NWS Storm Prediction Center Norman OK
1109 PM CDT Fri Apr 17 2026

Areas affected...southwestern through northeastern
Oklahoma...southwestern into south central Missouri...adjacent
portions of Texas and Arkansas

Concerning...Severe Thunderstorm Watch 132...

Valid 180409Z - 180615Z

The severe weather threat for Severe Thunderstorm Watch 132
continues.

SUMMARY...Thunderstorm intensities are waning with diminishing risk
for severe weather. A new severe weather watch is not anticipated.

DISCUSSION...The southward cold frontal surge continues,
particularly across and south of the Interstate 44 corridor of
Oklahoma, accompanied by 3-5+ mb 2-hourly surface pressure rises and
gusty northwesterly winds. Lift of moist, potentially unstable air
above the leading edge of this air mass is maintaining fairly
vigorous thunderstorm development, which may be locally augmenting
these gusts.
=20=20
Most unstable inflow near the cold front/dryline intersection
southwest of Altus OK might still be sufficient to support at least
some continuing risk for severe hail across the nearby Red River
vicinity another couple of hours. Otherwise, peak convective
intensities have been gradually waning over the past few hours with
diminishing severe weather potential.

..Kerr.. 04/18/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7DH5brhgNuOW6ra5zfIZ_M5kYrRYpxhWGqQKhwWL024PEKqEqIJiCyuvJrMIwyquPCOG9rAaE= Ax6HVifm5nWMxyCZIY$ for graphic product...

ATTN...WFO...LZK...SGF...TSA...FWD...OUN...SJT...

LAT...LON 34709987 35499856 36369681 37079437 37749295 36839265
34719498 33599729 32759933 34709987=20

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


=3D =3D =3D
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